Skogsvik I Wastewater Treatment Plant, Erdal, Norway

Skogsvik I is a municipal wastewater treatment plant located in Erdal, a village in Askøy municipality, Vestland county, Norway. The plant serves a small population of 409 residents and operates with a designed capacity of 350 m³/day, currently discharging 177.38 m³/day of treated wastewater. The plant provides secondary treatment, which is the standard biological treatment level required under Norwegian regulations for small agglomerations. Norway, as part of the European Economic Area, follows the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for discharges to coastal waters from populations under 10,000. The treated effluent is discharged into the coastal waters of the North Sea near Askøy, an island municipality. The receiving environment is the Byfjorden fjord system, which supports diverse marine life and is an important area for local fisheries and recreation. The plant's coastal location requires careful management to protect water quality in the fjord.

The plant discharges into the coastal waters of Byfjorden, a fjord in Vestland county that connects to the North Sea. This marine environment supports a variety of fish, seabirds, and marine mammals, and is used for commercial fishing and recreational activities. The fjord's water quality is influenced by tidal exchange and freshwater inputs from surrounding rivers, making effective wastewater treatment essential to prevent nutrient enrichment and protect local ecosystems.